/*
 * To change this template, choose Tools | Templates
 * and open the template in the editor.
 */
package Controller;

import java.io.IOException;
import java.io.PrintWriter;
import javax.servlet.ServletException;
import javax.servlet.http.HttpServlet;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;
import java.lang.Object;
import Controller.Query;
import java.sql.Connection;
import java.sql.DriverManager;
import java.sql.ResultSet;
import java.sql.SQLException;
import java.sql.Statement;
import java.util.logging.Level;
import java.util.logging.Logger;

/**
 *
 * @author Eduardo
 */
public class Options extends HttpServlet {

    /**
     * Processes requests for both HTTP
     * <code>GET</code> and
     * <code>POST</code> methods.
     *
     * @param request servlet request
     * @param response servlet response
     * @throws ServletException if a servlet-specific error occurs
     * @throws IOException if an I/O error occurs
     */
    protected void processRequest(HttpServletRequest request, HttpServletResponse response)
            throws ServletException {
        try {
            
            String curso = request.getParameter("curso");
            String sem = request.getParameter("sem");

            ResultSet q;
            Class.forName("com.mysql.jdbc.Driver");
            Connection conn = DriverManager.getConnection("jdbc:mysql://localhost:3306/delc", "root", "password");
            Statement stmt = conn.createStatement();
            ResultSet rs;
            rs = stmt.executeQuery("select g.disciplina_id, g.sem, g.curso_id, c.nome, d.id, d.nome, d.cod, d.cargahoraria from grade g left join disciplinas d on g.disciplina_id = d.id right join cursos c on c.curso_id = g.curso_id where g.curso_id = "+ curso +" and g.sem = " + sem);
            String campos = "<option>Selecione</option>";
            while (rs.next()) {
                campos = campos + "<option value='" + rs.getInt("disciplina_id") + "'>" + rs.getString(6) + "</option>";
            }
            PrintWriter out = response.getWriter();
            response.setContentType("text/html");
//            request.setCharacterEncoding("UTF-8");
            out.print(campos);
            out.flush();
        } catch (ClassNotFoundException | SQLException | IOException ex) {
            Logger.getLogger(Options.class.getName()).log(Level.SEVERE, null, ex);
        } 
    }

    // <editor-fold defaultstate="collapsed" desc="HttpServlet methods. Click on the + sign on the left to edit the code.">
    /**
     * Handles the HTTP
     * <code>GET</code> method.
     *
     * @param request servlet request
     * @param response servlet response
     * @throws ServletException if a servlet-specific error occurs
     * @throws IOException if an I/O error occurs
     */
    @Override
    protected void doGet(HttpServletRequest request, HttpServletResponse response)
            throws ServletException, IOException {
        processRequest(request, response);
    }

    /**
     * Handles the HTTP
     * <code>POST</code> method.
     *
     * @param request servlet request
     * @param response servlet response
     * @throws ServletException if a servlet-specific error occurs
     * @throws IOException if an I/O error occurs
     */
    @Override
    protected void doPost(HttpServletRequest request, HttpServletResponse response)
            throws ServletException, IOException {
        processRequest(request, response);
    }

    /**
     * Returns a short description of the servlet.
     *
     * @return a String containing servlet description
     */
    @Override
    public String getServletInfo() {
        return "Short description";
    }// </editor-fold>
}
